libsodium/test/default/sodium_utils.c

#define TEST_NAME "sodium_utils"
#include "cmptest.h"

int
main(void)
{
    unsigned char  buf_add[1000];
    unsigned char  buf1[1000];
    unsigned char  buf2[1000];
    unsigned char  buf1_rev[1000];
    unsigned char  buf2_rev[1000];
    char           buf3[33];
    unsigned char  buf4[4];
    unsigned char  nonce[24];
    char           nonce_hex[49];
    const char    *b64;
    char          *b64_;
    const char    *b64_end;
    unsigned char *bin;
    unsigned char *bin_padded;
    const char    *hex;
    const char    *hex_end;
    size_t         b64_len;
    size_t         bin_len, bin_len2;
    size_t         hex_len;
    size_t         bin_padded_len;
    size_t         bin_padded_maxlen;
    size_t         blocksize;
    unsigned int   i;
    unsigned int   j;

    randombytes_buf(buf1, sizeof buf1);
    memcpy(buf2, buf1, sizeof buf2);
    printf("%d\n", sodium_memcmp(buf1, buf2, sizeof buf1));
    sodium_memzero(buf1, 0U);
    printf("%d\n", sodium_memcmp(buf1, buf2, sizeof buf1));
    sodium_memzero(buf1, sizeof buf1 / 2);
    printf("%d\n", sodium_memcmp(buf1, buf2, sizeof buf1));
    printf("%d\n", sodium_memcmp(buf1, buf2, 0U));
    sodium_memzero(buf2, sizeof buf2 / 2);
    printf("%d\n", sodium_memcmp(buf1, buf2, sizeof buf1));
    printf("%s\n",
           sodium_bin2hex(buf3, 33U, (const unsigned char *) "0123456789ABCDEF",
                          16U));
    hex = "Cafe : 6942";
    sodium_hex2bin(buf4, sizeof buf4, hex, strlen(hex), ": ", &bin_len,
                   &hex_end);
    printf("%lu:%02x%02x%02x%02x\n", (unsigned long) bin_len, buf4[0], buf4[1],
           buf4[2], buf4[3]);
    printf("dt1: %ld\n", (long) (hex_end - hex));

    hex = "Cafe : 6942";
    sodium_hex2bin(buf4, sizeof buf4, hex, strlen(hex), ": ", &bin_len, NULL);
    printf("%lu:%02x%02x%02x%02x\n", (unsigned long) bin_len,
           buf4[2], buf4[3], buf4[2], buf4[3]);

    hex = "deadbeef";
    if (sodium_hex2bin(buf1, 1U, hex, 8U, NULL, &bin_len, &hex_end) != -1) {
        printf("sodium_hex2bin() overflow not detected\n");
    }
    printf("dt2: %ld\n", (long) (hex_end - hex));

    hex = "de:ad:be:eff";
    if (sodium_hex2bin(buf1, 4U, hex, 12U, ":", &bin_len, &hex_end) != -1) {
        printf(
            "sodium_hex2bin() with an odd input length and a short output "
            "buffer\n");
    }
    printf("dt3: %ld\n", (long) (hex_end - hex));

    hex = "de:ad:be:eff";
    if (sodium_hex2bin(buf1, sizeof buf1, hex, 12U, ":", &bin_len, &hex_end) !=
        0) {
        printf("sodium_hex2bin() with an odd input length\n");
    }
    printf("dt4: %ld\n", (long) (hex_end - hex));

    hex = "de:ad:be:eff";
    if (sodium_hex2bin(buf1, sizeof buf1, hex, 13U, ":", &bin_len, &hex_end) !=
        0) {
        printf("sodium_hex2bin() with an odd input length\n");
    }
    printf("dt5: %ld\n", (long) (hex_end - hex));

    printf("%s\n",
           sodium_bin2base64(buf3, 31U, (const unsigned char *) "\xfb\xf0\xf1" "0123456789ABCDEFab",
                             21U, sodium_base64_VARIANT_ORIGINAL));
    printf("%s\n",
           sodium_bin2base64(buf3, 33U, (const unsigned char *) "\xfb\xf0\xf1" "0123456789ABCDEFabc",
                             22U, sodium_base64_VARIANT_ORIGINAL_NO_PADDING));
    printf("%s\n",
           sodium_bin2base64(buf3, 31U, (const unsigned char *) "\xfb\xf0\xf1" "0123456789ABCDEFab",
                             21U, sodium_base64_VARIANT_URLSAFE));
    printf("%s\n",
           sodium_bin2base64(buf3, 33U, (const unsigned char *) "\xfb\xf0\xf1" "0123456789ABCDEFabc",
                             22U, sodium_base64_VARIANT_URLSAFE_NO_PADDING));
    printf("%s\n",
           sodium_bin2base64(buf3, 1U, NULL,
                             0U, sodium_base64_VARIANT_ORIGINAL));
    printf("%s\n",
           sodium_bin2base64(buf3, 5U, (const unsigned char *) "a",
                             1U, sodium_base64_VARIANT_ORIGINAL));
    printf("%s\n",
           sodium_bin2base64(buf3, 5U, (const unsigned char *) "ab",
                             2U, sodium_base64_VARIANT_ORIGINAL));
    printf("%s\n",
           sodium_bin2base64(buf3, 5U, (const unsigned char *) "abc",
                             3U, sodium_base64_VARIANT_ORIGINAL));
    printf("%s\n",
           sodium_bin2base64(buf3, 1U, NULL,
                             0U, sodium_base64_VARIANT_ORIGINAL_NO_PADDING));
    printf("%s\n",
           sodium_bin2base64(buf3, 3U, (const unsigned char *) "a",
                             1U, sodium_base64_VARIANT_ORIGINAL_NO_PADDING));
    printf("%s\n",
           sodium_bin2base64(buf3, 4U, (const unsigned char *) "ab",
                             2U, sodium_base64_VARIANT_ORIGINAL_NO_PADDING));
    printf("%s\n",
           sodium_bin2base64(buf3, 5U, (const unsigned char *) "abc",
                             3U, sodium_base64_VARIANT_ORIGINAL_NO_PADDING));

    b64 = "VGhpcyBpcyBhIGpvdXJu" "\n" "ZXkgaW50by" " " "Bzb3VuZA==";
    memset(buf4, '*', sizeof buf4);
    assert(sodium_base642bin(buf4, sizeof buf4, b64, strlen(b64), "\n\r ", &bin_len,
                             &b64_end, sodium_base64_VARIANT_ORIGINAL) == -1);
    buf4[bin_len] = 0;
    printf("[%s]\n", (const char *) buf4);
    printf("[%s]\n", b64_end);

    memset(buf1, '*', sizeof buf1);
    sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), "\n\r ", &bin_len,
                      &b64_end, sodium_base64_VARIANT_ORIGINAL);
    buf1[bin_len] = 0;
    printf("[%s]\n", (const char *) buf1);
    assert(*b64_end == 0);

    memset(buf1, '*', sizeof buf1);
    sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), NULL, &bin_len,
                      &b64_end, sodium_base64_VARIANT_ORIGINAL);
    buf1[bin_len] = 0;
    printf("[%s]\n", (const char *) buf1);
    printf("[%s]\n", b64_end);

    assert(sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), NULL, NULL,
                             NULL, sodium_base64_VARIANT_ORIGINAL) == 0);

    assert(sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), NULL, NULL,
                             NULL, sodium_base64_VARIANT_ORIGINAL_NO_PADDING) == 0);
    assert(sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), " \r\n", NULL,
                             NULL, sodium_base64_VARIANT_ORIGINAL_NO_PADDING) == 0);
    assert(sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), NULL, NULL,
                             NULL, sodium_base64_VARIANT_URLSAFE_NO_PADDING) == 0);
    assert(sodium_base642bin(buf1, sizeof buf1, b64, strlen(b64), " \r\n", NULL,
                             NULL, sodium_base64_VARIANT_URLSAFE_NO_PADDING) == 0);

    for (i = 0; i < 1000; i++) {
        assert(sizeof buf1 >= 100);
        bin_len = (size_t) randombytes_uniform(100);
        bin = (unsigned char *) sodium_malloc(bin_len);
        b64_len = 1 + (bin_len + 2) / 3 * 4;
        b64_ = (char *) sodium_malloc(b64_len);
        randombytes_buf(bin, bin_len);
        memcpy(buf1, bin, bin_len);
        b64 = sodium_bin2base64(b64_, b64_len + 10, bin, bin_len,
                                sodium_base64_VARIANT_URLSAFE);
        assert(b64 != NULL);
        assert(sodium_base642bin(bin, bin_len + 10, b64, b64_len,
                                 NULL, NULL, &b64_end,
                                 sodium_base64_VARIANT_URLSAFE) == 0);
        assert(b64_end == &b64[b64_len - 1]);
        assert(memcmp(bin, buf1, bin_len) == 0);
        sodium_free(bin);
        sodium_free(b64_);
    }

    memset(nonce, 0, sizeof nonce);
    sodium_increment(nonce, sizeof nonce);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    memset(nonce, 255, sizeof nonce);
    sodium_increment(nonce, sizeof nonce);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    nonce[1] = 1U;
    sodium_increment(nonce, sizeof nonce);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    nonce[1] = 0U;
    sodium_increment(nonce, sizeof nonce);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    nonce[0] = 255U;
    nonce[2] = 255U;
    sodium_increment(nonce, sizeof nonce);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    for (i = 0U; i < 1000U; i++) {
        bin_len = (size_t) randombytes_uniform(sizeof buf1);
        randombytes_buf(buf1, bin_len);
        randombytes_buf(buf2, bin_len);
        for (j = 0U; j < bin_len; j++) {
            buf1_rev[bin_len - 1 - j] = buf1[j];
            buf2_rev[bin_len - 1 - j] = buf2[j];
        }
        if (memcmp(buf1_rev, buf2_rev, bin_len) *
                sodium_compare(buf1, buf2, bin_len) <
            0) {
            printf("sodium_compare() failure with length=%u\n",
                   (unsigned int) bin_len);
        }
        memcpy(buf1, buf2, bin_len);
        if (sodium_compare(buf1, buf2, bin_len)) {
            printf("sodium_compare() equality failure with length=%u\n",
                   (unsigned int) bin_len);
        }
    }
    memset(buf1, 0, sizeof buf1);
    if (sodium_is_zero(buf1, sizeof buf1) != 1) {
        printf("sodium_is_zero() failed\n");
    }
    for (i = 0U; i < sizeof buf1; i++) {
        buf1[i]++;
        if (sodium_is_zero(buf1, sizeof buf1) != 0) {
            printf("sodium_is_zero() failed\n");
        }
        buf1[i]--;
    }
    bin_len = randombytes_uniform(sizeof buf1);
    randombytes_buf(buf1, bin_len);
    memcpy(buf2, buf1, bin_len);
    memset(buf_add, 0, bin_len);
    j = randombytes_uniform(10000);
    for (i = 0U; i < j; i++) {
        sodium_increment(buf1, bin_len);
        sodium_increment(buf_add, bin_len);
    }
    sodium_add(buf2, buf_add, bin_len);
    if (sodium_compare(buf1, buf2, bin_len) != 0) {
        printf("sodium_add() failed\n");
    }
    bin_len = randombytes_uniform(sizeof buf1);
    randombytes_buf(buf1, bin_len);
    memcpy(buf2, buf1, bin_len);
    memset(buf_add, 0xff, bin_len);
    sodium_increment(buf2, bin_len);
    sodium_increment(buf2, 0U);
    sodium_add(buf2, buf_add, bin_len);
    sodium_add(buf2, buf_add, 0U);
    if (sodium_compare(buf1, buf2, bin_len) != 0) {
        printf("sodium_add() failed\n");
    }

    assert(sizeof nonce >= 24U);
    memset(nonce, 0xfe, 24U);
    memset(nonce, 0xff, 6U);
    sodium_increment(nonce, 8U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    memset(nonce, 0xfe, 24U);
    memset(nonce, 0xff, 10U);
    sodium_increment(nonce, 12U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    memset(nonce, 0xff, 22U);
    sodium_increment(nonce, 24U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));

    assert(sizeof nonce >= 24U);
    memset(nonce, 0xfe, 24U);
    memset(nonce, 0xff, 6U);
    sodium_add(nonce, nonce, 7U);
    sodium_add(nonce, nonce, 8U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    memset(nonce, 0xfe, 24U);
    memset(nonce, 0xff, 10U);
    sodium_add(nonce, nonce, 11U);
    sodium_add(nonce, nonce, 12U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));
    memset(nonce, 0xff, 22U);
    sodium_add(nonce, nonce, 23U);
    sodium_add(nonce, nonce, 24U);
    printf("%s\n",
           sodium_bin2hex(nonce_hex, sizeof nonce_hex, nonce, sizeof nonce));

    for (i = 0; i < 2000U; i++) {
        bin_len = randombytes_uniform(200U);
        blocksize = 1U + randombytes_uniform(100U);
        bin_padded_maxlen = bin_len + (blocksize - bin_len % blocksize);
        bin_padded = (unsigned char *) sodium_malloc(bin_padded_maxlen);
        randombytes_buf(bin_padded, bin_padded_maxlen);

        assert(sodium_pad(&bin_padded_len, bin_padded, bin_len,
                          blocksize, bin_padded_maxlen - 1U) == -1);
        assert(sodium_pad(&bin_padded_len, bin_padded, bin_len,
                          blocksize, bin_padded_maxlen + 1U) == 0);
        assert(sodium_pad(&bin_padded_len, bin_padded, bin_len,
                          0U, bin_padded_maxlen) == -1);
        assert(sodium_pad(&bin_padded_len, bin_padded, bin_len,
                          blocksize, bin_padded_maxlen) == 0);
        assert(bin_padded_len == bin_padded_maxlen);

        assert(sodium_unpad(&bin_len2, bin_padded, bin_padded_len,
                            bin_padded_len + 1U) == -1);
        assert(sodium_unpad(&bin_len2, bin_padded, bin_padded_len,
                            0U) == -1);
        assert(sodium_unpad(&bin_len2, bin_padded, bin_padded_len,
                            blocksize) == 0);
        assert(bin_len2 == bin_len);

        sodium_free(bin_padded);
    }

    return 0;
}